From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences. The proposer's argu...

Answer Details

The correct option is "much more." In the sentence, we are comparing the level of convincingness between the proposer's argument and that of his opponent. To show that one thing is higher or lower than the other, we use "much more" or "much less." Therefore, the most appropriate option is "much more."